CN215269219U

CN215269219U - Cooling device and motor controller

Info

Publication number: CN215269219U
Application number: CN202120806471.7U
Authority: CN
Inventors: 连云香; 王晴; 韦彬; 孙新函; 魏俊天; 蔡昀宁; 李凌翔; 王全任
Original assignee: SAIC General Motors Corp Ltd; Pan Asia Technical Automotive Center Co Ltd
Current assignee: SAIC General Motors Corp Ltd; Pan Asia Technical Automotive Center Co Ltd
Priority date: 2021-04-19
Filing date: 2021-04-19
Publication date: 2021-12-21
Anticipated expiration: 2031-04-19

Abstract

The application discloses cooling device and motor controller, including cooler and cooling support, the cooling support is including relative preceding support plate and the back support plate that sets up, the cooler is including preceding water-cooling board and back water-cooling board, the cooler is located between preceding support plate and the back support plate, preceding water-cooling board is installed in the front on the mounting panel, back water-cooling board is installed in the back on the mounting panel, preceding water-cooling board has formed the chamber that holds of installation power module with back water-cooling board. By the aid of the power module, the power module which is defined by different pin pi n can be adapted while electrical performance and cooling performance are guaranteed, applicability and compatibility of the cooling device are improved, and the power module is simple in structure and low in production cost.

Description

Cooling device and motor controller

Technical Field

The application relates to the technical field of vehicles, in particular to a cooling device and a motor controller.

Background

The motor controller is a key part of a new energy automobile, and can realize the control of the motor according to the requirements of the rotating speed, the torque and the like of the whole automobile so as to achieve the power output under different working conditions. The power module is a key part for converting direct current into alternating current inside the motor controller. When the motor controller continuously works, the power module can generate higher heat, and if the reasonable motor controller cannot be relied on to dissipate heat in time, the temperature can be continuously increased and even exceeds the junction temperature of the chip, so that the performance is limited or fails.

At present, the cooling device of the motor controller is often only applicable to a power module defined by a pin, and has great limitation and needs to be further improved.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present application provides a cooling device and a motor controller to solve the above technical problems.

The application provides a cooling device, it includes: cooler and cooling support, the cooling support is including relative preceding support plate and the back support plate that sets up, the cooler is including preceding water-cooling board and back water-cooling board, the cooler is located between preceding support plate and the back support plate, preceding water-cooling board is installed on preceding support plate, back water-cooling board is installed on back support plate, preceding water-cooling board and back water-cooling board enclose into the chamber that holds that is used for installing power module.

Optionally, the method further comprises: middle water-cooling board, middle water-cooling board respectively with preceding water-cooling board and back water-cooling board parallel arrangement, middle water-cooling board will hold the chamber interval and become a left side and hold the chamber on the right side, be provided with water inlet pipe joint and outlet pipe joint on the back water-cooling board, coolant liquid in the back water-cooling board flows back to back water-cooling board through middle water-cooling board, preceding water-cooling board, middle water-cooling board.

Optionally, extend a plurality of first otic placodes and a plurality of second otic placodes on the relative first side of preceding rack plate and the second side respectively, extend a plurality of third otic placodes with first otic placode one-to-one and a plurality of fourth otic placodes with the second otic placode one-to-one on the relative first side of back rack plate and the second side respectively, first fastener passes first otic placode and third otic placode, and the second fastener passes second otic placode and fourth otic placode, with preceding rack plate and back rack plate fixed connection.

Optionally, it is adjacent be provided with between the second otic placode and be used for with the controller under the body coupling's fifth otic placode, adjacent be provided with between the fourth otic placode be used for with the controller under the body coupling's sixth otic placode, frame plate before the fifth otic placode perpendicular to, frame plate behind the sixth otic placode perpendicular to, first otic placode and second otic placode all with preceding frame plate coplane, third otic placode and fourth otic placode all with back frame plate coplane.

Optionally, the injection molding piece is arranged between the first lug plate and the third lug plate, a first assembling hole and a second assembling hole are formed in the injection molding piece, a first nut used for being connected with the positive pole of the power module is arranged in the first assembling hole, and a second nut used for being connected with the negative pole of the power module is arranged in the second assembling hole.

The present application provides a motor controller comprising a power module mounted within a receiving cavity and a cooling device as described above.

Optionally, the power module further comprises a current sensor and a current sensor connecting copper bar, wherein the current sensor connecting copper bar comprises a first substrate, the first substrate is provided with a first plate surface and a second plate surface which are arranged oppositely, a first side of the first substrate extends towards a direction far away from the second plate surface to form a first side plate, a second side of the first substrate, which is arranged oppositely to the first side, extends towards a direction far away from the first plate surface to form a second side plate, and the first side plate is fixedly connected with an output terminal of the power module;

the current sensor is provided with a second substrate, the second substrate is bent towards the cooling device to form a third side plate, and the third side plate is connected with a second side plate fixing piece;

or the current sensor connecting copper bar comprises a coplanar fourth side plate and a coplanar fifth side plate, a first end of the fourth side plate in the length direction is perpendicularly connected with a first end of the fifth side plate in the length direction, a second end of the fourth side plate in the length direction is fixedly connected with an output terminal of the power module, the fourth side plate protrudes towards the direction far away from the power module to form a first groove, a second end of the fifth side plate in the length direction extends towards the direction close to the power module to form a first middle plate, the first middle plate extends towards the direction far away from the fourth side plate to form a sixth side plate parallel to the fifth side plate, the sixth side plate is connected with the third side plate, and the fourth side plate is fixedly connected with the output terminal of the power module;

or, the current sensor connecting copper bar comprises a seventh side plate and an eighth side plate, the seventh side plate is vertically arranged on the first side of the eighth side plate, the seventh side plate protrudes towards the direction away from the power module to form a second groove, a ninth side plate parallel to the seventh side plate is vertically arranged on the second side of the eighth side plate opposite to the first side, the ninth side plate is connected with the third side plate, and the seventh side plate is fixedly connected with the output terminal of the power module.

Optionally, the cooling device further comprises a current sensor and a current sensor connecting copper bar, wherein a second substrate is arranged on the current sensor, and the second substrate is bent towards the cooling device to form a third side plate;

the current sensor connecting copper bar comprises a connecting part and a first bending plate, the first bending plate comprises a first vertical plate and a first transverse plate which are vertically connected, and the first transverse plate is connected with the third side plate;

the connecting part comprises a second transverse plate and a second vertical plate which are vertically connected, the connecting part is positioned on the same side of the first bending plate, the second vertical plate is vertically connected with the first vertical plate, the second transverse plate and the second vertical plate are both vertical to the first transverse plate, and the second transverse plate is fixedly connected with an output terminal of the power module;

or, the connecting portion include third diaphragm and third riser, the third diaphragm is connected with the riser is perpendicular, just the third diaphragm is parallel with the first diaphragm, the third diaphragm turns over a formation towards the direction that is close to cooling device and turns over the board, the third riser sets up on turning over the board perpendicularly, the first diaphragm of third riser perpendicular to, connecting portion are located the first riser homonymy, third riser and power module's output terminal fixed connection.

Optionally, the capacitor copper bar comprises a capacitor and a capacitor copper bar, wherein the capacitor copper bar comprises a base, a first mounting plate, a second mounting plate and a third mounting plate, the base is provided with a first side edge and a second side edge which are oppositely arranged, the first mounting plate and the second mounting plate are vertically arranged on the first side edge, the third mounting plate is vertically arranged on the second side edge, the first mounting plate is connected with the positive electrode of the capacitor, the second mounting plate is connected with the negative electrode of the capacitor, and the third mounting plate is connected with the power module;

or the capacitor copper bar comprises a fixing groove and a connecting sheet, the fixing groove is provided with a first groove sheet and a second groove sheet which are oppositely arranged, the connecting sheet is vertically arranged on the second groove sheet, the first groove sheet is connected with the positive electrode of the capacitor, the second groove sheet is connected with the negative electrode of the capacitor, and the connecting sheet is connected with the power module.

Optionally, still include filtering module and high-pressure joint copper bar, the high-pressure joint copper bar includes second buckling plate and buckling rod, the second buckling plate includes perpendicular fourth diaphragm and the fourth riser of connecting, be provided with first installation piece and second installation piece on the terminal surface that the fourth riser was kept away from to the fourth diaphragm, first installation piece and second installation piece all are used for being connected with the high-pressure joint, buckling rod includes perpendicular horizontal pole and the montant of connecting, the montant is installed on the fourth riser, the montant is parallel with fourth diaphragm and fourth riser respectively, horizontal pole perpendicular to fourth diaphragm, and parallel with the fourth riser, the horizontal pole is kept away from and is provided with the third installation piece of being connected with the filtering module positive pole and the fourth installation piece of being connected with the filtering module negative pole on the terminal surface of montant.

The application provides a cooling device and motor controller is through setting up cooler and cooling support, and the chamber that holds of power module is installed to preceding water-cooling board and back water-cooling board formation of cooler, and power module's corresponding part can be worn out by holding the chamber, when guaranteeing electric performance and cooling performance, and the power module of the different pin foot definitions of adaptation improves cooling device's suitability and compatibility, simple structure moreover, low in production cost.

Drawings

Fig. 1 is a schematic structural view of a cooling device of the present application.

Fig. 2 is an exploded view of the motor controller of the present application.

Fig. 3 is a top view of the motor controller of the present application.

Fig. 4 is a schematic diagram of the connection of the cooling device of the present application to a current sensor.

Fig. 5 is a schematic diagram of the connection of the cooling device of the present application to a current sensor, a filter module, and a capacitor.

Fig. 6 is a schematic diagram of the connection of the cooling device of the present application with the filter module and the capacitor.

Fig. 7 is a schematic structural diagram of a capacitor copper bar in an embodiment of the present application.

Fig. 8 is a schematic structural diagram of a capacitor copper bar in another embodiment of the present application.

Fig. 9 is a schematic structural diagram of a capacitor copper bar in another embodiment of the present application.

Fig. 10 is a schematic structural diagram of a current sensor connecting copper bar in one embodiment of the present application.

Fig. 11 is a schematic structural diagram of a current sensor connecting copper bar in another embodiment of the present application.

Fig. 12 is a schematic structural diagram of a current sensor connecting copper bar in another embodiment of the present application.

Fig. 13 is a schematic structural diagram of a current sensor connecting copper bar in another embodiment of the present application.

Fig. 14 is a schematic structural diagram of a current sensor connecting copper bar in another embodiment of the present application.

Detailed Description

The technical solutions of the present application are described in detail below with reference to the accompanying drawings and specific embodiments. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Fig. 1 shows a schematic structural diagram of a cooling device of the present application, and fig. 2 shows a schematic structural diagram of a motor controller of the present application. As shown in fig. 1-2, the present application provides a cooling device comprising: a cooler 12 and a cooling rack 11.

The cooling rack 11 includes a front rack plate 1101 and a rear rack plate 1104 which are oppositely disposed, and the cooler 12 includes a front water cooling plate 1203 and a rear water cooling plate 1205, and the cooler 12 is located between the front rack plate 1101 and the rear rack plate 1104.

The front water-cooling plate 1203 is installed on the front support plate 1101, the rear water-cooling plate 1205 is installed on the rear support plate 1104, and the front water-cooling plate 1203 and the rear water-cooling plate 1205 form an accommodating cavity for installing the power module 4.

When the cooling device is assembled, the rear support plate 1104 can be installed on corresponding tooling equipment, the rear water cooling plate 1205 is installed on the rear support plate 1104, the power module 4 is installed on the rear water cooling plate 1205, the front water cooling plate 1203 is installed on the power module 4, the front support plate 1101 is connected with the front water cooling plate 1203, and the front support plate 1101 is connected with the rear support plate 1104.

Because it is enclosed by front water-cooling board 1203 and back water-cooling board 1205 to hold the chamber, parts such as positive negative pole, pin needle and output terminal of power module 4 all can be located and hold the chamber outside, consequently, can be applicable to the power module of different pin foot definitions.

The application provides a cooling device is through setting up cooler 12 and cooling support 11, and the preceding water-cooling board 1203 and the back water-cooling board 1205 of cooler form the chamber that holds of installation power module, and power module's corresponding part can be worn out by holding the chamber, when guaranteeing electric property and cooling performance, and the power module of the different pin foot definitions of adaptation improves cooling device's suitability and compatibility, simple structure moreover, low in production cost.

Further, the cooling device further includes: and the middle water cooling plate 1204, wherein the middle water cooling plate 1204 is respectively arranged in parallel with the front water cooling plate 1203 and the rear water cooling plate 1205.

Middle water-cooling board 1204 will hold the chamber interval and become a left side and hold the chamber on the right side, be provided with inlet tube joint 1201 and outlet pipe joint 1202 on the back water-cooling board 1205, be provided with inlet tube 1 and outlet pipe 2 on the casing 3 under the controller, inlet tube 1 is connected with inlet tube joint 1201, and outlet pipe 2 and outlet pipe joint 1202 are connected.

The cooling liquid in the rear water cooling plate 1205 flows back to the rear water cooling plate 1205 through the middle water cooling plate 1204, the front water cooling plate 1203 and the middle water cooling plate 1204. In this embodiment, the cooling liquid may be cold water.

Through setting up middle water-cooling board 1204, can increase power module 4's holding capacity when guaranteeing the cooling effect, but also can realize the flow of the coolant liquid in front water-cooling board 1203, middle water-cooling board 1204 and the back water-cooling board 1205, improve the cooling effect better.

In one embodiment of the present application, the power module 4 is attached to the corresponding water-cooling plate, and the surface attached to each water-cooling plate is coated with a heat-conducting silicone grease to improve the heat-conducting effect.

The inlet tube 1 and the outlet tube 2 are installed in the assembly hole of the lower shell 3 of the controller one by one in a threaded connection mode and are sealed through the sealing ring, so that the sealing performance is guaranteed. The vent plug 13 is press-fitted into the vent plug hole of the controller lower case 3 through a press-fitting process.

Fins are arranged inside the front water cooling plate 1203, the middle water cooling plate 1204 and the rear water cooling plate 1205 to increase the contact area with cooling liquid and improve the cooling effect.

Preferably, a plurality of first ear plates 1106 and a plurality of second ear plates extend from opposite first and second sides of the front frame plate 1101, respectively.

A plurality of third ear plates 1107 corresponding to the first ear plates 1106 and a plurality of fourth ear plates 1108 corresponding to the second ear plates 1106 extend from the first side and the second side of the rear frame plate 1104. A first sleeve 1103 is arranged on the third ear plate 1107, and a second sleeve is arranged on the fourth ear plate 1108.

First fastener passes first otic placode 1106, first sleeve 1103 and third otic placode 1107, and the second fastener passes second otic placode, second sleeve and fourth otic placode 1108, with preceding shelf plate 1101 and back shelf plate 1104 fixed connection, can make things convenient for the loading and unloading of cooling support 11, improves handling efficiency.

Wherein, first fastener and second fastener all can adopt bolt, screw, double-screw bolt etc. and first sleeve and second sleeve all adopt the bolt sleeve.

In the embodiment of fig. 1, the first and

second ear plates

1106, 1106 are each at least four in number, with adjacent first ear plates 1106 being equally spaced and adjacent second ear plates being equally spaced.

In one specific embodiment, a fifth ear plate for connecting with the controller lower shell 3 is disposed between adjacent second ear plates, and a sixth ear plate 1109 for connecting with the controller lower shell 3 is disposed between adjacent fourth ear plates 1108.

The fifth otic placode is perpendicular to the front frame plate 1101, the sixth otic placode 1109 is perpendicular to the rear frame plate 1104, the first otic placode 1106 and the second otic placode are coplanar with the front frame plate 1101, and the third otic placode 1107 and the fourth otic placode 1108 are coplanar with the rear frame plate 1104.

By providing the fifth and sixth ear plates 1109 and setting the fifth ear plate to be perpendicular to the front frame plate 1101 and the sixth ear plate to be perpendicular to the rear frame plate 1104, it is possible to facilitate the connection of the cooling device with the controller lower case 3.

Further, injection molding parts 1105 are arranged between the adjacent first ear plates 1106 and the adjacent third ear plates 1107, a first assembling hole and a second assembling hole are formed in the injection molding parts 1105, a first nut used for being connected with the positive pole of the power module 4 is arranged in the first assembling hole, and a second nut used for being connected with the negative pole of the power module 4 is arranged in the second assembling hole.

Through setting up first nut, second nut in the injection molding, when guaranteeing to be connected with power module 4, can also play insulating effect.

The present application also provides a motor controller, as shown in fig. 2-6, comprising a power module 4 and a cooling device as described above, the power module 4 being mounted within a receiving cavity.

The application provides a motor controller is through setting up cooler 12 and cooling support 11, and the preceding water-cooling board 1203 and the back water-cooling board 1205 of cooler form the chamber that holds of installation power module, and power module's corresponding part can wear out by holding the chamber, when guaranteeing electric property and cooling performance, the power module of the different pin foot definitions of adaptation, improves cooling device's suitability and compatibility, simple structure moreover, low in production cost.

In the present embodiment, the number of the power modules 4 is six, and three power modules 4 are mounted in the front and rear accommodation cavities, respectively.

Further, as shown in fig. 2 to 6, the motor controller further includes a current sensor 8 and a current sensor connecting copper bar 9.

As shown in fig. 10, the current sensor connecting copper bar 9 is in a zigzag shape, and includes a first substrate 902, where the first substrate 902 has a first board surface and a second board surface that are oppositely disposed, a first side of the first substrate 902 extends in a direction away from the second board surface to form a first side plate 903, a second side of the first substrate 902, which is oppositely disposed with respect to the first side, extends in a direction away from the first board surface to form a second side plate 901, and the first side plate 903 is fixedly connected to an output terminal of the power module;

the current sensor 8 is provided with a second substrate, the second substrate is bent towards the cooling device to form a third side plate 801, and the third side plate 801 is fixedly connected with a second side plate 901.

As shown in fig. 2, the number of third side plates 801 on the current sensor 8 is equal to the number of power modules 4.

In the embodiment of fig. 11, the current sensor connecting copper bar 9 includes a coplanar fourth side plate 918 and a coplanar fifth side plate 904, a first end of the fourth side plate 918 in the length direction is perpendicularly connected to a first end of the fifth side plate 904 in the length direction, and a second end of the fourth side plate 918 in the length direction is fixedly connected to the output terminal of the power module 4.

The fourth side plate 918 protrudes away from the power module 4 to form a first groove 905, the second end of the fifth side plate 904 in the length direction extends towards the direction close to the power module 4 to form a first middle plate, the first middle plate extends away from the fourth side plate 918 to form a sixth side plate 906 parallel to the fifth side plate 904, and the sixth side plate 906 is connected with the third side plate 801.

In the embodiment of fig. 13, the current sensor connecting copper bar 9 includes a seventh side plate 911 and an eighth side plate 913, the seventh side plate 911 is vertically disposed on a first side of the eighth side plate 913, the seventh side plate 911 protrudes toward a direction away from the power module 4 to form a second groove 912, a ninth side plate 914 parallel to the seventh side plate 911 is vertically disposed on a second side of the eighth side plate 913 disposed opposite to the first side, the ninth side plate 914 is connected to the third side plate 801, and the seventh side plate 911 is fixedly connected to the output terminal of the power module 4.

In the embodiment of fig. 12, the current sensor connecting copper bar 9 includes a connecting portion and a first bent plate, the first bent plate includes a first vertical plate 908 and a first horizontal plate 907 vertically connected, and the first horizontal plate 907 is connected to the third side plate 801.

The connecting portion comprises a second transverse plate 910 and a second vertical plate 909 which are vertically connected, the connecting portion is located on the same side of the first bending plate, the second vertical plate 909 is vertically connected with the first vertical plate 908, and both the second transverse plate 910 and the second vertical plate 909 are perpendicular to the first transverse plate 907. The second horizontal plate 910 is fixedly connected to the output terminal of the power module 4.

In the embodiment of fig. 14, the connecting portion includes a third transverse plate 915 and a third vertical plate 916, the third transverse plate 915 is vertically connected to the first vertical plate 908, the third transverse plate 915 is parallel to the first transverse plate 907, the third transverse plate 915 is turned over toward the direction close to the cooling device to form a turning plate, the third vertical plate 916 is vertically disposed on the turning plate 917, the third vertical plate 916 is perpendicular to the first transverse plate 907, and the connecting portion is located on the same side as the first vertical plate. The third riser 916 is fixedly connected to the output terminal of the power module 4.

Through designing into multiple shape with current sensor connection copper bar 9 to increase current sensor connection copper bar 9's suitability, can adopt same elements such as bus-bar electric capacity, current sensor in the scheme of difference, when reduce cost, improved motor controller's compatibility, be favorable to the platform serialization.

In a specific embodiment, the current sensor connecting copper bar 9 is welded with the output terminal of the power module 4 into a whole by means of laser welding.

Further, the motor controller further comprises a capacitor 10 and a capacitor copper bar 5.

In the embodiment of fig. 7, the capacitor copper bar 5 comprises a base 501, a first mounting plate 503, a second mounting plate 504 and a third mounting plate 502.

The base 501 has a first side and a second side which are oppositely arranged, the first mounting plate 503 and the second mounting plate 504 are vertically arranged on the first side, the third mounting plate 502 is vertically arranged on the second side, the first mounting plate 503 is connected with the anode of the capacitor 10, the second mounting plate 504 is connected with the cathode of the capacitor 10, and the third mounting plate 502 is connected with the power module 4.

The base 501 may be an L-shaped plate, as shown in fig. 7, or the base 501 may be a straight plate, such as a rectangular plate.

In the embodiment of fig. 8, the capacitor copper bar 5 includes a fixing groove 505 and a connecting piece 506, and the connecting piece 506 is a rectangular piece.

The fixing groove 505 has a first slot and a second slot which are oppositely arranged, the connecting piece 506 is vertically arranged on the second slot, the first slot is connected with the positive pole of the capacitor 10, the second slot is connected with the negative pole of the capacitor 10, and the connecting piece 506 is connected with the power module 4.

As shown in fig. 9, the connecting piece 506 may also be provided as a bent piece. The connecting sheet 506 and the power module 4, the fixing groove 505 and the capacitor 10 can be connected by laser welding.

Through setting electric capacity copper bar 5 to multiple structure, can make things convenient for being connected of power module 4 and electric capacity 10, improve the suitability to improve machine controller's compatibility, be favorable to the platform serialization.

In a specific embodiment, the motor controller further comprises a filtering module 6 and a high-voltage connector copper bar 7.

As shown in fig. 2, the high-voltage connector copper bar 7 includes a second bending plate 701 and a bending rod 702, the second bending plate 701 includes a fourth transverse plate and a fourth vertical plate which are connected perpendicularly, a first mounting piece and a second mounting piece are arranged on an end surface of the fourth transverse plate far away from the fourth vertical plate, and the first mounting piece and the second mounting piece are both used for being connected with the high-voltage connector.

The pole 702 of buckling includes the horizontal pole and the montant of perpendicular connection, the montant is installed on the fourth riser, the montant is parallel with fourth diaphragm and fourth riser respectively, horizontal pole perpendicular to fourth diaphragm, and parallel with the fourth riser, be provided with on the terminal surface that the montant was kept away from to the horizontal pole and be used for the third installation piece of being connected with filtering module 6 anodal and be used for the fourth installation piece of being connected with filtering module 6's negative pole.

Through setting up high pressure joint copper bar 7, can make things convenient for being connected of filtering module 6 and high pressure joint.

In one embodiment, the capacitor 10, the filter module 6 and the current sensor 8 can be fixed on the controller lower shell 3 through bolts.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the embodiments of the present application, and are not limited thereto; although the embodiments of the present application have been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. A cooling apparatus, comprising: cooler and cooling support, the cooling support is including relative preceding support plate and the back support plate that sets up, the cooler is including preceding water-cooling board and back water-cooling board, the cooler is located between preceding support plate and the back support plate, preceding water-cooling board is installed on preceding support plate, back water-cooling board is installed on back support plate, preceding water-cooling board and back water-cooling board enclose into the chamber that holds that is used for installing power module.

2. The cooling apparatus of claim 1, further comprising: middle water-cooling board, middle water-cooling board respectively with preceding water-cooling board and back water-cooling board parallel arrangement, middle water-cooling board will hold the chamber interval and become a left side and hold the chamber on the right side, be provided with water inlet pipe joint and outlet pipe joint on the back water-cooling board, coolant liquid in the back water-cooling board flows back to back water-cooling board through middle water-cooling board, preceding water-cooling board, middle water-cooling board.

3. The cooling device according to claim 1 or 2, wherein a plurality of first ear plates and a plurality of second ear plates extend from the first side and the second side of the front frame plate opposite to each other, a plurality of third ear plates corresponding to the first ear plates one by one and a plurality of fourth ear plates corresponding to the second ear plates one by one extend from the first side and the second side of the rear frame plate opposite to each other, the third ear plates are provided with first sleeves, the fourth ear plates are provided with second sleeves, the first fastening members pass through the first ear plates, the first sleeves and the third ear plates, and the second fastening members pass through the second ear plates, the second sleeves and the fourth ear plates to fixedly connect the front frame plate and the rear frame plate.

4. The cooling device according to claim 3, wherein a fifth lug plate for coupling with the lower controller housing is disposed adjacent to the second lug plate, a sixth lug plate for coupling with the lower controller housing is disposed adjacent to the fourth lug plate, the fifth lug plate is perpendicular to the front housing plate, the sixth lug plate is perpendicular to the rear housing plate, the first lug plate and the second lug plate are coplanar with the front housing plate, and the third lug plate and the fourth lug plate are coplanar with the rear housing plate.

5. The cooling device as claimed in claim 4, wherein an injection molding member is disposed between the adjacent first ear plate and the adjacent third ear plate, the injection molding member has a first assembly hole and a second assembly hole, the first assembly hole has a first nut disposed therein for connecting with the positive pole of the power module, and the second assembly hole has a second nut disposed therein for connecting with the negative pole of the power module.

6. A motor controller comprising a power module and a cooling device as claimed in any one of claims 1 to 5, the power module being mounted in a receiving cavity.

7. The motor controller according to claim 6, further comprising a current sensor and a current sensor connecting copper bar, wherein the current sensor connecting copper bar comprises a first substrate, the first substrate has a first plate surface and a second plate surface which are oppositely arranged, a first side of the first substrate extends towards a direction away from the second plate surface to form a first side plate, a second side of the first substrate, which is oppositely arranged to the first side, extends towards a direction away from the first plate surface to form a second side plate, and the first side plate is fixedly connected with the output terminal of the power module;

8. The motor controller according to claim 6, further comprising a current sensor and a current sensor connecting copper bar, wherein a second base plate is arranged on the current sensor, and the second base plate is bent towards the cooling device to form a third side plate;

9. The motor controller of claim 6, further comprising a capacitor and a capacitor copper bar, wherein the capacitor copper bar comprises a base, a first mounting plate, a second mounting plate and a third mounting plate, the base has a first side and a second side which are oppositely arranged, the first mounting plate and the second mounting plate are vertically arranged on the first side, the third mounting plate is vertically arranged on the second side, the first mounting plate is connected with the positive electrode of the capacitor, the second mounting plate is connected with the negative electrode of the capacitor, and the third mounting plate is connected with the power module;

10. The motor controller of claim 6, further comprising a filtering module and a high-voltage joint copper bar, wherein the high-voltage joint copper bar comprises a second bending plate and a bending rod, the second bending plate comprises a fourth transverse plate and a fourth vertical plate which are vertically connected, a first installation piece and a second installation piece are arranged on the end face, away from the fourth vertical plate, of the fourth transverse plate, the first installation piece and the second installation piece are both used for being connected with the high-voltage joint, the bending rod comprises a transverse rod and a vertical rod which are vertically connected, the vertical rod is installed on the fourth vertical plate, the vertical rod is respectively parallel to the fourth transverse plate and the fourth vertical plate, the transverse rod is perpendicular to the fourth transverse plate and parallel to the fourth vertical plate, and a third installation piece connected with the positive pole of the filtering module and a fourth installation piece connected with the negative pole of the filtering module are arranged on the end face, away from the transverse rod, of the fourth installation piece are arranged on the end face, away from the vertical rod.